The three-day fair at the Durham Fairgrounds will open Friday at 5 p.m. and will feature a variety of animals, an assortment of arts and crafts and — for the fun of it and bragging rights, tractor and truck pulls.

Other attractive elements are live musical entertainment and fair food, including fried dough of course.

The Connecticut State Police K-9 Unit will run a demonstration Sunday at 10:30 a.m. The 4-H fair is open Friday 5-10 p.m., Saturday from 8 a.m. to 10 p.m. and Sunday from 8 a.m. to 4 p.m. Admission is free, with a $5 parking fee.